Boiler construction



Nov. 13, 1923. 1,474,116

- T. LARREY ET AL BOILER consmucwrou 7 Filed July 9, 1919 2 Sheets-Sheet 1 n luomtozs n 02070 ZjLrreI/ and Patented Nov. 13, i923, UNETEEQ il ATlglhl i TEOTDORO LARREY AND LUIS GODARD, OF MEXICO, MEXICO.

BOILER CONSTRUCTFJN.

Application filed July 9, 1919. Serial No. 309,550.

To all 107mm may concern: which latter there suspended a bell T hav- Be it known that we, Tsonono IJARREY and ing a flange 8 which is coupled by means LUIS oosen, citizens oi the united Mexican oi bolts to a flange 10 formed on the lower tilt-ates, residing at Mexico city, Federal Disend of a pipe or tube 11. The upper end of trict, Mexico, have invented certain new and this pipe 11 is provided with two diverging useful. Improvements in Boiler Construe branches 12. which are connected to horitions, of which the tollowing; is a specificazontal pipes 13, the latter delivering the extion. haust: steam to the impact condenser (not This invention relates to locomotive shown). boilers and to stationary and marine boilers; The exhaust pipe 3 is provided in its iu and its object is to utilise the initial heat in tcrior with a bridge 2i) having a vertical the fire-box, by increasingthe heating surguide opening for the stem 30 of a valve 531, face and by spreading the flames in its inwhich is shaped like a buoy and which, on terior, which is effected by means of a shalbeing raised, engages in bell 7. Said bell low drum disposed a certain distance from, thus serves as a valve seat and in this wa; and opposite to, the entry of the fines into enables the steam passage to be closed. The the fire box lower end of stem 30 is linked at 32, (see The invention further resides in utilizing" l) to a lever 33 mounted on a horizontal the above-mentioned drum in such a way as rock-shaft 34 havingan arm 35 connected to obtain a better circulation of the water in t ereto. The other end of this arm is the boiler, the drum servi o b rea 1 pivoted to a rod 86 which extends along the its position in the interior of the fire-box to outside of the boiler to the cnginecfis cab, S0 h t th water more idl d cause it t that by pushing or pulling this rod 36 the rise more quickly. engineer Ditty lower or raise valve 31 at will. Another object of the invention is to pro- When valve 31 is raised and seated in hell vide a deflector in the sm ke-b0 pp sit t 7, the passage of steam to the condensers is the ends of the tines, so that, by means of th closed. and all of the exhaust steam will then for ed draft, the flames ases a d sm k escape through an annular opening; 37 prowill be drawn through the time in a more vided between hell 7 and the mouth or the if l di t ib t d manner d th h t. exhaust nozzle 6, and will enter the collector gases 011 escaping around the edges of the Off smoke stack 39. whence it {M55498 into deflector, will be caused to envelop the steam the atmosphere. pipes, whereby they again heat the steam In the smoke-box 2. and opposite the flueith th result th t d -h t d ste m plate 40. (Fig. there is arranged a concavois taken int the c li ders. convex deflecting plate ll, provided with re th -Yi drawings: intorcenients or webs said plate being Fig 1 is a broken, id l ti f a 1 suspended vertically in the smoke-box by motive smoke-box constructed in accordance ans f bracket-3 43, with its concave face with the invention. opposite and in spaced relation to the flue Fig. 2 is an enlarged vertical cross-section plate. and its marginal edges spaced continot the sinoke-box and stack. uously from the circumferential walls of the Fi 3 i a fr ment l ide ele ation of smoke-box. The marginal outline of the dethe rear end of the locomotive, with parts tlector parallels that formed by the periphremoved to show the waterrcirculating drum eral tubes in the flue-p ate l0 and lies in imin the fire-box. mediate proximity to the said tube outline:

Fig. i is an elevation of part of the tire and due to that fact. it serves the purpose box, showing the water-circulating drum and or causing the draft to draw the smoke. hot the ends ot the fines. gases and flan-20s from the tire-box in such Referring more particularly to the drawa K151111191 that they will pass around the ings. l is the shell of the boiler the Smokeedges of the deflector in proportion to each be 2 of which has disposed within it an on: line it and will also envelop thc steam pipes haust pipe 8, which receives the exhaust tem connecting the boiler and cylinders (not from th exhaust ports of the cylinders (not sh wn). shown) and which provided with a cou- Figs. 3 and t show the tire-box 4? 1m pling flange a. Flange 4 is coupled to the equipped with a heating drum 48 for effectflange 5 of the exhaust nozzle 6, within lug a better circulation oi the water. This drum communicates through pipe 49 with crown sheet 50, and through pipes .31 with the lateral water spaces. It is provided with the necessary stay-bolts or braces 52 and, as may be seen, is suspended vertically in the fire-box opposite the entry of the fines, so that it compels the flames to spread inside the lire-box; and since the heat in the interior of the fire-box is greater than in the flues, it follows that the water in the drum 4-8 will be heated more rapidly and a. better circulation of water in the boiler will be maintained than is the case at present.

Drain plugs are provided in the shell of the boiler to permit the drum 48 to be cleaned.

Har ng thus described our invention what we claim is:

1. In a boiler operating under forced di aft, the combination, with the smoke stack, the front and rear flue plates and their connecting fines; of a chamber immediately adjacent each flue plate and in which flames, hot gases and smoke are present; and a combined draft equalizer and products of combustion deflector consisting solely of an imperforate deflecting element of less area than the adjacent flue plate suspended vertically in one of said chamb rs in rear of the smoke stack opposite and in spaced relation to the flue openings and with its margin continuously spaced from the circumferential alls of said chamber so as to cause the flames, hot gases and smoke to be drawn by the forced draft: around the marginal edges of said deflecting element in a uniform manner; substantially as described. V

2. In a boiler operating under forced draft, the combination, with the smoke stack, the smoke-box and fire-box and the w front and rear flue plates and their connecting flues, of a combined d aft equalizer and products of combustion deflector consisting solely of an imperforate deflector plate of less area than the front flue plate disposed vertically within the smoke-box in rear of the smoke stack but in front of, and in spaced relation to, said front flue plate, and a series of brackets mounted in the smokebox for suspending the deflector plate therein with its marginal edges spaced from the circumferential walls thereof, so as to cause the forced draft in the smoke-box to draw the flames, hot gases and smoke from the lire-box through said flues and around the said marginal edges of the deflector plate in a uniformly distributed manner.

3. In a boiler operating under forced draft, the combination of a smoke box; flue tubes passing through the boiler and terurinatingat their forward ends at a,tube sheet in the smoke box; and a single ele- -ment acting as a combined draft equalizer and products of combustion deflector disposed vertically in the smoke box adjacent the tube sheet and having a marginal outline which parallels that formed by the peripheral tubes in the tube sheet and which lies in immediate proximity to'the said tube outline, whereby the area of the surface of the deflector confronting said tubes is substantially equal to the area of the tube zone of the tube sheet, said deflector being so arranged with relation to the tube sheet that the products of combusion are caused by the forced draft to pass over the entire con-' front ng surface of the deflector in aradial direction and around the marginal edges thereof, and so that the forced draft in each flue tube is substantially equal to the draft in each of the other flue tubes.

in testimony whereof we have affixed our signatures.

TEODORO LARREY; LUIS GODARD. 

